Antenna Module Layout Using Auxiliary Radiators for Positioning Accuracy
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Solution Overview
Problem
The challenge is to improve the positioning performance of electronic devices with confined spaces, where the reduced spacing between antennas due to limited mounting space deteriorates the positioning accuracy.
Innovation Solution
The solution involves an electronic device design that includes a first and second plate facing opposite directions, a side member connecting them, and a substrate with antenna elements and auxiliary radiators. The auxiliary radiators are strategically placed to increase the spacing between antennas, enhancing positioning performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of antennas is increased to improve positioning performance, then positioning accuracy is improved, but the mounting space required increases
Solution Approach 1:
The patent introduces auxiliary radiators that are disposed in a direction orthogonal to the substrate, creating a three-dimensional antenna configuration. This vertical stacking approach allows multiple radiating elements to be positioned in the Z-direction while maintaining compact footprint on the substrate, effectively utilizing the third dimension to increase antenna count without proportionally increasing mounting area.
Solution Approach 2:
The auxiliary radiators are positioned within the projection area of the main antenna elements when viewed from above, creating a nested configuration. The first auxiliary radiator is disposed to overlap with the first antenna element, and the second auxiliary radiator overlaps with the second antenna element, allowing multiple radiating elements to occupy overlapping two-dimensional spaces while being separated in the vertical dimension.
2Measurement precision
If the spacing between antennas is increased to improve positioning performance, then positioning accuracy is improved, but the device size increases
Solution Approach 1:
The patent resolves the spacing contradiction by transitioning from a two-dimensional planar arrangement to a three-dimensional configuration. The auxiliary radiators are positioned at different heights (Z-direction) relative to the main antenna elements, creating effective spatial separation and increased spacing between radiating elements without increasing the horizontal footprint of the device.
Solution Approach 2:
The antenna system is segmented into main antenna elements and auxiliary radiators that operate in different spatial planes. This segmentation allows the system to achieve equivalent or improved positioning performance by utilizing the vertical dimension for signal separation, thereby maintaining compact horizontal dimensions while achieving effective spacing between radiating elements.
Data Source
AI summary
An electronic device includes: a substrate; a first antenna element disposed on the substrate; a second antenna element disposed on the substrate and disposed to be spaced apart from the first antenna element; and a first auxiliary radiator disposed to be spaced apart from the first antenna element. In one embodiment of the present disclosure, a first distance between the second antenna element and the first auxiliary radiator is longer than a second distance between the first antenna element and the second antenna element, at least a portion of the first auxiliary radiator is overlapped with the first antenna element, when viewed from the first direction, and the first auxiliary radiator is electrically connected to the first antenna element.